I have them installed in my 77 for the front seat passengers, if you use the sub belt (the one that goes to the floor) and you have stock or stock type seats, you wil have to cut a hole in them for the belt to come up through. Contraty to what people beleive, it is not to keep you from sliding out from under the lap belt, its to keep the lap belt in your lap when the shoulder harnesses are attached and tightened. I use just the lap belt most of the time unless it get really hairy, then I break out the shoulder harnesses, they keep you from doing much moving, only thing you can do is turn your head.
Depdog
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